Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6742116 | Security method, security software and security system for electronic communications | Kazuki Matsui | 2004-05-25 |
| 6735615 | Status change notification system for use in chat system channel | Noboru Iwayama, Kenichi Sasaki, Hitoshi Yamauchi, Hidenobu Ito, Kazuki Matsui | 2004-05-11 |
| 6711264 | Security improvement method and security system | Kazuki Matsui | 2004-03-23 |
| 6678720 | Chat system and method for delivering additional information via another independent network | Noboru Iwayama | 2004-01-13 |